Enzymes. A Cell's Catalysts

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Slide 1

Enzymes

A Cell’s

Catalysts

Credit picture: Mirjam Czjzek

Slide 2

CA Standard

Students know enzymes are proteins that catalyze biochemical reactions without altering the reaction equilibrium and the activities of enzymes depend on the temperature, ionic conditions, and the pH of the surroundings.

Slide 3

Vocabulary

Catalyst: A substance that speeds up a chemical reaction without itself being changed

Enzyme: A biological catalyst that is usually a protein

Substrate: The reactant(s) upon which an enzyme has its action

Product: A substance that results from a chemical reaction

Slide 4

Catalysts Lower Activation Energy

Slide 5

Enzyme-Substrate Interaction

Slide 6

Enzyme Inhibition

Slide 7

Enzymes are…

Essential to all forms of life

Not “used up” by the reaction that they catalyze

Specific to the reaction that they catalyze